package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 */
@Service
@Slf4j
public class SeckillSkuScheduled {

    @Autowired
    private SeckillService seckillService;

    @Autowired
    private RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    // TODO 幂等性处理
    @Scheduled(cron = "*/3 * * * * ?")
    public void uploadSeckillSkuLatest3Days() {
        // 1、重复上架无需处理
//        log.info("上架秒杀的商品信息...");
        // 加分布式锁。锁的业务执行完成，状态已经更新完成。释放锁以后，其他人获取到锁就会拿到最新的状态
        RLock lock = this.redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            this.seckillService.uploadSeckillSkuLatest3Days();
        } finally {
            lock.unlock();
        }
    }
}
